The patch titled
Subject: x86: kallsyms: disable absolute percpu symbols on !SMP
has been removed from the -mm tree. Its filename was
x86-kallsyms-disable-absolute-percpu-symbols-on-smp.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
Subject: x86: kallsyms: disable absolute percpu symbols on !SMP
scripts/kallsyms.c has a special --absolute-percpu command line
option which deals with the zero based per cpu offsets that are
used when building for SMP on x86_64. This means that the option
should only be passed in that case, so add a Kconfig symbol with
the correct predicate, and use that instead.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
Tested-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx>
Tested-by: Kees Cook <keescook@xxxxxxxxxxxx>
Acked-by: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: H. Peter Anvin <hpa@xxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Michal Marek <mmarek@xxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
init/Kconfig | 4 ++++
scripts/link-vmlinux.sh | 2 +-
2 files changed, 5 insertions(+), 1 deletion(-)
diff -puN init/Kconfig~x86-kallsyms-disable-absolute-percpu-symbols-on-smp init/Kconfig
--- a/init/Kconfig~x86-kallsyms-disable-absolute-percpu-symbols-on-smp
+++ a/init/Kconfig
@@ -1420,6 +1420,10 @@ config KALLSYMS_ALL
Say N unless you really need all symbols.
+config KALLSYMS_ABSOLUTE_PERCPU
+ bool
+ default X86_64 && SMP
+
config PRINTK
default y
bool "Enable support for printk" if EXPERT
diff -puN scripts/link-vmlinux.sh~x86-kallsyms-disable-absolute-percpu-symbols-on-smp scripts/link-vmlinux.sh
--- a/scripts/link-vmlinux.sh~x86-kallsyms-disable-absolute-percpu-symbols-on-smp
+++ a/scripts/link-vmlinux.sh
@@ -86,7 +86,7 @@ kallsyms()
kallsymopt="${kallsymopt} --page-offset=$CONFIG_PAGE_OFFSET"
fi
- if [ -n "${CONFIG_X86_64}" ]; then
+ if [ -n "${CONFIG_KALLSYMS_ABSOLUTE_PERCPU}" ]; then
kallsymopt="${kallsymopt} --absolute-percpu"
fi
_
Patches currently in -mm which might be from ard.biesheuvel@xxxxxxxxxx are
alpha-extable-use-generic-search-and-sort-routines.patch
s390-extable-use-generic-search-and-sort-routines.patch
x86-extable-use-generic-search-and-sort-routines.patch
ia64-extable-use-generic-search-and-sort-routines.patch
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